Paxman Hi-Dyne engine (original) (raw)

The Paxman Hi-Dyne engine was a form of experimental diesel engine developed for rail transport use by the British engine makers Paxman of Colchester. They used variable supercharging to give a constant power output across their speed range. The name "Hi-Dyne" is a reference to dyne, a CGS unit of force, and implicitly to torque.